Well, power and dominance are themes that pop up. The Indominus Rex is a very powerful creature, and the fanfic might explore how the reader relates to that power. Another theme could be transformation. Maybe the presence of the Indominus Rex causes the reader to transform in some way, either in personality or in their view of the world. And of course, there's the theme of coexistence, how a human and this fearsome dinosaur can coexist in the same fictional universe.
A frequent theme is the relationship between the two. It could be a friendship that defies the odds, as a human and a dangerous dinosaur becoming friends. Also, survival is a common theme. They might have to survive in a world full of other threats together. There can also be a theme of mystery, where the Indominus Rex has some secrets that the reader tries to figure out.
Chapter 327, "Official Announcement Entering the Circle!", is the clearest early answer because it pushes Jiang Li into a new phase or setting. Early on, Three hours later, the shoot was over, and Shen Lan personally picked....
Chapter 524, "He Faces Imprisonment", is the clearest early answer because it turns Yu Li's situation into a concrete plot event.
Chapter 173, "Su Yinwan, You Did It on Purpose, Right?", is the clearest early answer because it turns Su Yinwan's situation into a concrete plot event. The setup is Jiang Li finally rose from her seat., but the pressure keeps building through Seeing her stand up, He Yun also stood up..
Chapter 249, "Maxing Out Wilderness Survival Skills!", is the clearest early answer because the violence around Survival Skills becomes final instead of hypothetical. The chapter turns that into something concrete by moving from Jiang Yan's body subconsciously shivered twice.
Chapter 466, "Are There Really Wild Boars?!", is the clearest early answer because it turns Bai Lu's situation into a concrete plot event. Early on, The lady sure acts like a lady, even in 'Wilderness Survival' she....
Chapter 494, "Unrequited Love Turns Into Enmity", is the clearest early answer because it turns President Shang's situation into a concrete plot event.
Chapter 446, "Actually Sending Jiang Yan to Pick Up Trash?!", is the clearest early answer because it turns Dad's situation into a concrete plot event.
Chapter 388, "All the Rich People in Jing City Are in Jiang Li's Live Room", is the clearest early answer because it pushes Rich People into a new phase or setting. Early on, what, what do you plan to do?" Gu Yu's false identity was never meant....
Chapter 292, "Coming and Going, Gathering and Parting, Human Nature", is the clearest early answer because it turns Eternal Life Talisman's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Jiang Li slowly lowered his hand.
Chapter 411, "You Really Hold a Strong Grudge", is the clearest early answer because it turns Hua Country's situation into a concrete plot event. It opens with The lead director, who understood the entire process, had an...